Re: [PATCH] verification/rvgen: Use .old instead of .bak for kunit backup files

[sashiko-bot@kernel.org]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Medium] The `rvgen kunit` tool generates `.old` backup files which are not cleaned up by `make distclean`, polluting the user's working directory.
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--- Patch [1]: [PATCH] verification/rvgen: Use .old instead of .bak for kunit backup files ---
commit 293b444e4dfea5692931faee1bc9c58a549085d8
Author: Gabriele Monaco <gmonaco@redhat.com>

verification/rvgen: Use .old instead of .bak for kunit backup files

The rvgen kunit command generates .bak backup files and these can be
checked in for selftests (make check). Clean targets like make disclean
remove such files, leaving the tree dirty. Switch to .old to preserve a
clean tree after make disclean.

Closes: https://lore.kernel.org/lkml/aosuwKH5GOEo0xTN@google.com

> diff --git a/tools/verification/rvgen/rvgen/kunit.py b/tools/verification/rvgen/rvgen/kunit.py
> index ed2082d7d3bc4..85973f918c9b5 100644
> --- a/tools/verification/rvgen/rvgen/kunit.py
> +++ b/tools/verification/rvgen/rvgen/kunit.py
[ ... ]
> @@ -173,7 +173,7 @@ EXPORT_SYMBOL_IF_KUNIT({struct_name});
>              for path in (header_file_path, kunit_c_file_path):
>                  if path.exists():
>                      try:
> -                        path.rename(path.with_suffix(path.suffix + ".bak"))
> +                        path.rename(path.with_suffix(path.suffix + ".old"))

[Severity: Medium]
Will this regression leave users' working directories polluted with .old
backup files that aren't cleaned up by the top-level make distclean target?

The kernel's global Makefile explicitly cleans *.bak files during
distclean, but ignores *.old files.

When a user runs rvgen kunit in a directory with existing kunit files and
accepts the backup prompt, print_files() will generate these .old files.
Since they are no longer .bak files, is it expected that they will persist
after running make distclean?

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Sashiko AI review · https://sashiko.dev/#/patchset/20260824081519.81103-2-gmonaco@redhat.com?part=1